package com.huike.web.controller.common;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.huike.common.exception.CustomException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import com.huike.clues.service.ISysFileService;
import com.huike.common.config.HuiKeConfig;
import com.huike.common.constant.Constants;
import com.huike.common.core.controller.BaseController;
import com.huike.common.core.domain.AjaxResult;
import com.huike.common.utils.StringUtils;
import com.huike.common.utils.file.FileUtils;

import java.io.*;

/**
 * 通用请求处理
 */
@RestController
public class CommonController extends BaseController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ISysFileService fileService;


    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile( MultipartFile file){
        try{
            // 上传文件路径
            return fileService.upload(file);
        }catch (Exception e){
            return AjaxResult.error(e.getMessage());
        }
    }


    @GetMapping("common/download")
    public void download(String fileName, HttpServletResponse response){
        String resPath = this.getClass().getClassLoader().getResource("").getPath();
        String xlsPath = resPath+fileName;
        log.info("resources的路径:{}", resPath);
        log.info("模版的路径:{}", xlsPath);
        //读取clues.xlsx 模版  通过response对象 刷出去
        try{
            File file = new File(xlsPath);
            // 以流的形式下载文件。
            InputStream fis = new BufferedInputStream(new FileInputStream(file));
            byte[] buffer = new byte[fis.available()];
            fis.read(buffer);
            fis.close();
            // 清空response
            response.reset();

            // 设置response的Header
            response.addHeader("Content-Disposition", "attachment;filename=" + new String(fileName.getBytes()));
            response.addHeader("Content-Length", "" + file.length());
            response.setContentType("application/octet-stream");

            OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
            toClient.write(buffer);
            toClient.flush();
            toClient.close();
        }catch (Exception exception){
            exception.printStackTrace();
        }
    }


    }

